title: Characteristics of magnetic probes for identifying sentinel lymph nodes.
abstract: The identification of the sentinel lymph nodes that cause tumor metastasis is important in breast cancer therapy. The detection of magnetic fluid accumulating in the lymph nodes using a magnetic probe allows surgeons to identify the lymph nodes. In this study, we carried out numerical simulations and experiments to investigate the sensitivity and basic characteristics of a magnetic probe consisting of a permanent magnet and a small magnetic sensor. The measured magnetic flux density arising from the magnetic fluid agreed well with the numerical results. In addition, the results helped realize an appropriate probe configuration for achieving high sensitivity to magnetic fluid. A prototype probe detected magnetic fluid located 30 mm from the probe head.
authors.forename: Tetsu
authors.initials: T
authors.lastname: Ookubo
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Inoue
authors.forename: Dongmin
authors.initials: D
authors.lastname: Kim
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Ohsaki
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Mashiko
authors.forename: Moriaki
authors.initials: M
authors.lastname: Kusakabe
authors.forename: Masaki
authors.initials: M
authors.lastname: Sekino
mesh_terms: D003198:Computer Simulation; D006801:Humans; D059346:Magnets; D008954:Models, Biological; D021701:Sentinel Lymph Node Biopsy / Q000295:instrumentation* / Q000379:methods*